Method for treating continuously-moving material



C. R. WEIHE Dec. 31, 1929.

METHOD FOR TREATING CONTINUOUSLY MOVING MATERIAL Original Filed Feb. 1,1926 gvvuwnto'c I C @118 R mi 51 Hot u @1 Patented, nee; 2.1," 1929owns-3013113101:wEmn-or coNNE LsmrLLn, PENNSYLVANIA, ASSIIGNOR or oun-TO CHARLES 'CONNELLSVILLE, PENNSYLVANIA mntrnon non rnmrriteeonTINUoUsLY-Movme MATERIAL Original application and Fra r 192e,Serial-1T0. 85,369. Divided and thisl application" filed m a,

I 1927. Serial This invention relates to] a method for treatingcontinously moving materiah'and is a'division of my orginal application,Serial- No. 85,369, filed February 1, 1926.

- The object of the inventionis to provide a method. for maintaining atreating agent for continuouslymoving materialin contact therewith tovinsure thorough and effective treatmentof the material bythe agent'andto avoid the agent passin terial. '.That.is to say,

lie present invention is particularly adapted'for-use in connection.

with. neutralizing waste waters from mines,

1' .mills, factories, furnaces, tan-yards and the like before itentersstreams, lakesor, rivers to prevent contamination thereof, and con- Itemplates'thei use of a neutralizing agent to be'maintained in effectualcon-tact with the running stream of waste Water in :Such ,a way that thetreating agent is efiectually used and will. not pass out with the wasteinto the stream.

' "Vhile the method herein described may be carried out on apparatus ofdifferent struc-' tural features and characteristics,nevertheless anexample of a-type of apparatus for carrying out'the methodis-shown intheac- .companying drawings, in. which Figure .l' is a side elevation,partly in section of the apparatus employed. Figure 2 is a verticalcross-sectional viewtaken-on the line 2-2 of'Figure 1. I Similarreference characters designate corresponding parts throughout theseveral fig:

ures of the drawing. 1

'Referring tothe example of the apparatus vshown for carrying out themethodor process it will be observedthat the same includes a rotatablymounted cylinder lopen at both ends indicated as at 2 and 3 to permitthe free passage of air for the purpose of-aerating the material, whilethe entrance or front.

2 of the cylinder is locatedin theplane above that of the lower end 3and is preferably provided with an inturnedfiange 1 to prevent thematerial being treated from splashing out through this end. On the inout with the mag,

outer 'face ofthe cylinder. A sprocket chain taminated by mines, mills,factories or other paints, oils, etc.

so. 204,646. v

lower. and consequently may vbe replaced more economically. The cylinderis suitably supported with its front end inclined upward as is shownclearly in Fig. l'and thesup- "ports; here shown comprise rollers 6 withwhich'is'engaged an annular: rib or track 7. One set' of rollers andtrack are arranged at each end of the cylinderas is shown clear- .lyi'nFig. 1.' To take care of the downward thrust of the cylinder 1 thestructure shown at 8 is employed which consists of'two, sectionsof conesproperly tapered to avoid rubbingfriction, these cones being numbered'9and10.' 7 I Themea'nsfor rotating the cylinder 1 comprise,v as shown,a circular rack 11 which is I preferably made in sections and bolted tothe l2 isengaged with the circular rack 11 and also with a sprocketwheel 13 fixed to a shaft 14 and driven by a worm wheel 15'actu'atedthrough a worm 16. This worm 16 is driven by any suitablemeans, not shown,

- aconnection forwhicl'i is illustrated at 17.

r .A flume 20 is arranged at an'incline to discharge into theupper endofthecylinder 1 for"'feeding to said cylinder the material to; be"treated. The treating agent for use in connection with the material fedthrough the flume is also discharged into the flu ne at the point shownat 21 and passes wlththe material into the cylinder. -Any suitablefeeding means for the treating agent may be employed and the feed therofmay be controlled by any suitable means.

While this method is primarily intended,

for purifying water which has become con,

industrial enterprises before passing it on into streams or otherwater-ways, it obvious: ly may be employed for treating other materialor itmay be used for the preparation of solid material which is designedto be brought into intimate contact with the water to be purified andheld therein so that it will not pass out with the purified water.

The cylindrical drum 1 with the internal spiral ribs is adapted to beturned in such direction as to roll the solids or heavier particles ofthe treating agent towards the elevated end of the cylinder and retainthem until they have been dissolved or worn away to small particleswhich may then be carried with the liquid passing out through the lowerend'of the cylinder. The rolling or turning action of the cylindercauses an abrasion between the heavier material and solid particles soas to present an active surface to the liquid.

This rolling action also thoroughly mixes the material to be treatedpassing through the cylinder with the treating agent rolling andsplashing it and returning the larger particles of the treating agent tothe upper ends of the sections of the cylinder where they are retaineduntil worn away and acted upon by the liquid.

The cylinder may be made of any suitable material adapted to withstandthe abrasive action of the treating agent and also that of the chemicalaction the material being treated and of the treating agent.

The size of the cylinder, its length, diameter, details of construction,elevation of intake end, spacing of the spirals, and revolutions of thecylinder will depend on the quantity of liquid to be passed through in aspecified time as well as on the kind of liquid and the thoroughnessthat it is to be mixed or neutralized.

Both ends of the cylinder 1 are made open to provide for a draft of airthrough the cylinder which will effectively aerate the mixture.

In the operation of the apparatus the driving mechanism or any otherthat should be used is set. in motion by any suitable means to cause thecylinder to revolve and turn on the rollers 6, it being prevented fromslipping 'or rolling to the lower side by the thrust mechanism shown at9 and'lO. The contaminated water indicated at W is admitted through theflume 20 into the revolving cylinder 1 and in passing through the flumethe water receives and carries with it the neutralizing material oragent fed from the receptacle 22. The contaminated water with theneutralizing agent having passed into the cylinder 1 flows over thespiral 5 rolling and tumbling and thoroughly mixing with the agent andthen passes out of the lower end "of the cylinder to any suitable pointwhich may be a stream, basin or settling chamber.

By methods heretofore in use the neutralizing agent was washed away withthe water and great quantities lost which was very objectionable becausethis agent contributed to the filling up of the settling chambersrequiring them to'be frequenly cleaned out.

The apparatus employed herein is substans tially automatic it being ofcourse necessary to set the cylinder rotating mechanism in operation butafter this has been accomplished the water flowing in through the flumewill carry with it the treating agent and the rotation of the cylinderin the proper direction will while constantly agitating the waterpassing through it will also return the larger particles of the treatingagent to the upper end of the cylinder and retain it at or near theentrance of the contaminated water until the action of the latter willhave completely worn away or dissolved such particles.

It will thus be seen that one of the important features of the inventionis to retain I the active treating agent at or near the entrance of thewater to be treated by means of the spiral and to rotate the cylinder toretain the neutralizing or treating agent 1n an active state.

Without further description it is thought 7 that the features andadvantages of the invention will be readily apparent to those skilled inthe art, and it will of course be understood that changes in the form,proportion and minor details of construction may be resorted to, withoutdeparting from the spirit of the invention and scope of the appendedclaims. 2

- I claim V 1. A method of treating a fluid with a soluble solid whichconsists in introducing the soluble solid into the flowing fluid,causing the fluid and soluble solid to cascade through a chamber, andcontinuously returning undissolved portions of the soluble solid in adirection counter to the cascading fluid.

i 2. A method of treating a waste liquid with a soluble solid whichconsists in introducing the soluble solid into the stream of flowingliquid, causing the liquid and soluble solid to cascade through achamber and continuously returning undissolved portions of the solublesolid in a direction counter to the cascading liquid.

3. A method of treating waste liquids and the like which consists inintroducing the soluble solid into the stream of flowing liquid, causingthe liquid and soluble solid to cascade through a chamber in thepresence of an air draft and continuously returning undissolved portionsof the soluble solid in a direction counter to the movement of thecascading liquid.

In testimony whereof I hereunto affix my signature.

CLYDE RODERICK WEIHE.

